2018KCL(ip) SERIES SIGNAL MONITOR
OPERATIONS MANUAL
Eberle Design Inc.
Page 2
1.2.1.1 MONITORKEY CONFIGURATION SET-UP WIZARD
The Set-up Wizard in the
MonitorKey
®
program can be used to automatically generate all
the enhanced monitor programming data for the 2018KCL in most cases without the need
for understanding complex and confusing monitor terminology. It configures the monitor
enhanced-feature programming parameters using a simple series of intersection related
questions.
1.2.2 CONFLICT MONITORING
The 2018KCL is capable of monitoring 18 channels. Each channel consists of a Green,
Yellow, and Red field signal output at the field terminals. Programming is provided in the
Datakey for assigning permissive (compatible) channels and inhibiting Yellow monitoring
for required channels. The 2018KCL detects the presence of conflicting Green or Yellow
signals on the AC field terminations between any two or more channels assigned to
conflict. The monitoring circuitry is capable of detecting either full wave or positive and
negative half-wave field signal outputs at the specified voltage levels. A Conflict fault places
the 2018KCL into the fault mode illuminating the CONFLICT indicator, transferring the
Output relay contacts to the fault position and enabling the Stop-Time output to the
controller.
1.2.3 24VDC MONITORING (VDC)
Sensing of the cabinet 24VDC supply is provided as specified in Section 4.2, Chapter 4 of
the
Caltrans Traffic Signal Control Equipment Specifications
. When the 24VDC input falls
below the specified voltage levels the 2018KCL will enter the fault mode illuminating the
VDC indicator, transferring the Output relay contacts to the fault position and enabling the
Stop-Time output to the controller. See Section 8.1.3.
1.2.4 CONTROLLER WATCHDOG MONITORING (WDT)
Sensing of the controller Watchdog output is provided as specified in Section 4.3 of the
Caltrans Traffic Signal Control Equipment Specifications
. When a logic transition is not
sensed for the specified period (see Section 8.1.4) the 2018KCL will enter the fault mode
illuminating the WDT indicator, transferring the Output relay contacts to the fault position
and enabling the Stop-Time output to the controller.
1.2.4.1 WDT CLEAR ON PU OPTION
The WDT Clear on PU option (see section 4.2.3.7) determines whether this Watchdog
(WDT) fault mode is latched through an AC Line brownout or not. If the WDT Clear on PU
option is selected, an AC Line brownout condition will reset the Watchdog (WDT) fault
mode when the AC Line is restored. The WDT indicator will remain illuminated until a Reset
command is issued via the front panel RESET button or External Reset input. This
indicates to the technician that a Watchdog (WDT) fault occurred but was cleared by an AC
Line brownout. If the WDT Clear on PU option is not selected, the Watchdog (WDT) fault
mode is maintained until a Reset command is applied.